4201663 has 4 divisors (see below), whose sum is σ = 4384368. Its totient is φ = 4018960.

The previous prime is 4201649. The next prime is 4201699. The reversal of 4201663 is 3661024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4201663 is a prime.

It is a Duffinian number.

4201663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91318 + ... + 91363.

It is an arithmetic number, because the mean of its divisors is an integer number (1096092).

Almost surely, 2^4201663 is an apocalyptic number.

4201663 is a deficient number, since it is larger than the sum of its proper divisors (182705).

4201663 is a wasteful number, since it uses less digits than its factorization.

4201663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182704.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 4201663 is about 2049.7958434927. The cubic root of 4201663 is about 161.3641564896.

Adding to 4201663 its reverse (3661024), we get a palindrome (7862687).

The spelling of 4201663 in words is "four million, two hundred one thousand, six hundred sixty-three".